Synthesis of Bis[N-(3-t-butyl-5-methoxysalicylidene) benzylaminato] Zirconiume (IV) dichloride catalyst for ethylene polymerization

3-tert-Butyl-5-methoxy –salicylaldehyde as initiating material was synthesized. Bis[N-(3-t-butyl-5-methoxysalicylidene) benzylamin obtained by condensation of salicylaldehyde compound with benzyl amine under standard conditions. Bis[N-(3-t-butyl-5-methoxysalicylidene) benzylaminato] Zirconiume (IV) dichloride as FI Catalyst, was synthesized. Synthesized raw material, ligand and catalyst were characterized with instrumental techniques such as FTIR, HNMR and CHN. Zirconium complex investigated as olefin polymerization catalyst using ethylene at different parameters such as [Al]/[Zr], pressure, and temperature conditions. As a result, this complex was found to exhibit very high activity using MAO as a cocatalyst. Zirconium complex displayed the highest activity with moderate (Mv: 4.7× 104) to very high (Mv: 25.5×104) molecular weight ranges. The maximum activity exceeded 14496-gPE/(mmol-Zr.h) at [Al]/[Zr]=1000, 50 ºC, and 3 bar pressure.

کلیدواژه ها:

Ligand ، FI catalyst ، Polymerization ، MAO ، Polyethylene